bool openlog(string $ident, int $option, int $facility)
openlog() opens a connection to the system logger for a program.
The use of openlog() is optional. It will automatically be called by syslog() if necessary, in which case
ident will default to
TRUE on success or
FALSE on failure.
- string $ident: The string
identis added to each message.
- int $option: The
optionargument is used to indicate what logging options will be used when generating a log message.
openlog() OptionsYou can use one or more of this options. When using multiple options you need to OR them, i.e. to open the connection immediately, write to the console and include the PID in each message, you will use: LOG_CONS | LOG_NDELAY | LOG_PID
if there is an error while sending data to the system logger, write directly to the system console
open the connection to the logger immediately
(default) delay opening the connection until the first message is logged
print log message also to standard error
include PID with each message
- int $facility: The
facilityargument is used to specify what type of program is logging the message. This allows you to specify (in your machine's syslog configuration) how messages coming from different facilities will be handled.
security/authorization messages (use
LOG_AUTHPRIVinstead in systems where that constant is defined)
security/authorization messages (private)
clock daemon (cron and at)
other system daemons
reserved for local use, these are not available in Windows
line printer subsystem
USENET news subsystem
messages generated internally by syslogd
generic user-level messages
LOG_USERis the only valid log type under Windows operating systems
- LOG_USER is the only valid log type under Windows operating systems